A cap ventilation system and a cap including the system are provided. The cap ventilation system includes at least one spacer that when fixed to an interior or a brim of the cap, creates a gap between the interior or brim of the cap and the head of the user. If desired, a plurality of spacers may be spaced about the circumference of the interior or brim to extend the gap about the circumference of the interior or brim.

A vapor-permeable insert for item of clothing or accessory, including a collector element adapted to absorb solar radiation, a window element that is transparent to the solar radiation absorbed by the collector element, and an interspace formed between the window element and the collector element, the collector element and the window element being arranged at two opposite faces of the interspace.

A vapor-permeable insert for item of clothing or accessory, including a collector element adapted to absorb solar radiation, a window element that is transparent to the solar radiation absorbed by the collector element, and an interspace formed between the window element and the collector element, the collector element and the window element being arranged at two opposite faces of the interspace.

A head-mounted heat dissipation device includes a fan assembly and a wearing assembly. The wearing assembly is connected to the fan assembly to fix the fan assembly onto a head of a user. The fan assembly includes a casing and fans arranged in the casing. Air inlets and air outlets are defined in the casing. The air outlets are located on an inner side of the bottom surface of the casing, so that the air from the air outlets can be blown to the user's face. In addition, air guide strips are arranged side by side on a side of the air outlet within the casing for concealing the operation of the fans.

A head-mounted heat dissipation device includes a fan assembly and a wearing assembly. The wearing assembly is connected to the fan assembly to fix the fan assembly onto a head of a user. The fan assembly includes a casing and fans arranged in the casing. Air inlets and air outlets are defined in the casing. The air outlets are located on an inner side of the bottom surface of the casing, so that the air from the air outlets can be blown to the user's face. In addition, air guide strips are arranged side by side on a side of the air outlet within the casing for concealing the operation of the fans.

A cap includes a head cover and a bill extending from the head cover. The head cover is configured to be worn on the head of a user of the cap. The bill includes an inner wall that defines a vent through the bill. The cap may also include a mesh located in or across the vent and configured to allow airflow through the vent. In some embodiments, the vent may have a shape that imparts information to a view of the bill of the cap.

A removable cooling apparatus for a hat spaces a headband of the hat away from a wearer's head, creating an air gap that allows air flow over the wearer's head. A removable cooling apparatus uses coupling structures to hold the removable cooling apparatus in place against the headband. The removable cooling apparatus can be removed completely from the hat when not needed or for cleaning, leaving the hat in an unaltered state. A removable cooling apparatus may use a thin flexible strip to keep the headband of the hat from falling open into the air gap created by the removable cooling apparatus. The removable cooling apparatus use compressible pads to space the headband away from the wearer's head. The contact location of the compressible pads with the wearer's head can be easily adjusted by the wearer.

An apparatus and method for providing cooled clean filtered air to the wearer of this device while allowing them to remain inconspicuous and to do so using inexpensive easily obtainable filtration supplies.

An apparatus and method for providing cooled clean filtered air to the wearer of this device while allowing them to remain inconspicuous and to do so using inexpensive easily obtainable filtration supplies.

Aspects herein are directed to an article of headwear having a first layer of material formed from a polyester yarn, a second layer of material formed from a polyester yarn, and an absorbent layer positioned between the first layer of material and the second layer of material at a front of the article of headwear. The article of headwear is configured to temporarily store perspiration produced by a wearer's forehead area and transport the perspiration to the sides and back of the article of headwear where it can subsequently evaporate or be harmlessly released.